KMB NOVAR-1 Series, Operating Manual

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Novar 1xxx KMB systems
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So if, for example, an offset control is required due to a front-end capacitor, you must specify positive
offset power value. The controller will then intentionally undercompensate at its connection node just
by the size of the specified offset power value.
4.1.7 Parameter 06 – Metering Rate 2 Operation
The Novar controllers feature two sets of the above described control parameters.
Parameter 6 decides if the control process uses the first set of basic control parameters, 1 through 4,
only or if, under certain circumstances, the second set of parameters, 7 through 10 (metering rate 2) is
used as well.
By default parameter 6 is set to
0 00 0
and only parameters 1 through 4 of the parameters described
above are applied; parameters 7 through 10 are not significant in such an event, so they are not
shown.
Novar1206/1214 controllers allow changing the above described basic control parameters while
compensation is in progress, triggered by external signal (relay contact). They have a metering rate 2
request input for this operation, to which an insulated contact or optocoupler can be connected. If you
set the parameter to
1 11 1
, the controller will start evaluating metering rate 2 requests and, depending on
the input’s instantaneous condition, use parameters 1 through 4 or 7 through 10.
The decimal point after the last character then indicates whether metering rate 2 request is active. If it
is dark, metering rate 2 request is not active and only parameters for metering rate 1 apply. On the
contrary, lit decimal point indicates active metering rate 2 request and the controller uses parameters
specified for metering rate 2.
The metering rate 2 function can further be set to value
E EE E
. In this event the second set of control
parameters is used for active power export, that is if active power flows from appliance to source.
4.1.8 Parameters 12,13 – Metering Current Transformer (CT) Ratio
You can specify metering current transformer nominal primary value in amperes using parameter 12.
The value range is from 5 to 9950.
This parameter (12) is not specified (---- shown) by default. With this setting, all values that are
current- or power- related , that is measured values of instantaneous effective, active and reactive
currents and power, and further the C/k
MIN
value (parameter 22) and power in each section (parameter
25), are shown in the magnitude to which they are transformed at the metering current transformer
secondary side. The parameter’s value specified does not affect the controller’s control operation, it
only affects displayed values that are related to current or power. Therefore the value may be
specified later, after the automatic section power recognition process, without having to start this
process again.
Parameter 13 selects metering current transformer nominal secondary current. You can choose from
5A and 1A.
Warning!!! Unlike parameter 12, this parameter must be set correctly for controller’s
proper operation! The controller determines whether the current input is overloaded evaluating this
parameter and instantaneous current value. The controller may stop operation undesirably or,
contrariwise, this operation disablement will not work when it should (see description of parameter 30,
alarm from overcurrent).
Parameter 13 setting will be kept even on controller initialization (see description further below).
4.1.9 Parameter 14 – Reconnection Delay Time
It is used to ensure sufficient discharge of a capacitive section prior to reconnection. It can be set in
range 5 seconds to 20 minutes to one of the values 0.05 - 0.10 - 0.15 - 0.20 - 0.30 - 0.45 -1.0 - 1.30 -
2.0 - 3.0 - 4.0 - 5.0 - 7.0 - 10.0 - 15.0 - 20.0 . The format is the same as in parameters 2 and 8.